/*
Error: Function r is missing argument $px.
        on line 57 of identify.scss

52:       width: r(495);
53:       margin: 0 auto;
54: 
55:       .item {
56:           width: r(132);
57:           height: r();
58:         div {
59:           width: r(90);
60:           height: r(90);
61:           overflow: hidden;
62:           img {

Backtrace:
identify.scss:57
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:75:in `block in perform_arguments'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:67:in `zip'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:67:in `perform_arguments'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/script/tree/funcall.rb:261:in `perform_sass_fn'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/script/tree/funcall.rb:144:in `block in _perform'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:108:in `block in with_function'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:108:in `with_function'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/script/tree/funcall.rb:143:in `_perform'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/script/tree/node.rb:50:in `perform'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:402:in `visit_prop'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `block in with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block (2 levels) in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `map'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:183:in `with_environment'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:442:in `visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `block in with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block (2 levels) in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `map'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:183:in `with_environment'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:442:in `visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `block in with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block (2 levels) in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `map'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:183:in `with_environment'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:442:in `visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `block in with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block (2 levels) in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `map'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:444:in `block in visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:183:in `with_environment'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:442:in `visit_rule'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `block in with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:135:in `with_frame'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/stack.rb:79:in `with_base'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:162:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:52:in `block in visit_children'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:52:in `map'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:52:in `visit_children'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:171:in `block in visit_children'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:183:in `with_environment'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:170:in `visit_children'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `block in visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:190:in `visit_root'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/base.rb:36:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:161:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/visitors/perform.rb:10:in `visit'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/root_node.rb:36:in `css_tree'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/tree/root_node.rb:29:in `render_with_sourcemap'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/engine.rb:389:in `_render_with_sourcemap'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/engine.rb:307:in `render_with_sourcemap'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/plugin/compiler.rb:462:in `update_stylesheet'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/plugin/compiler.rb:215:in `block in update_stylesheets'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/plugin/compiler.rb:209:in `each'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/plugin/compiler.rb:209:in `update_stylesheets'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/plugin.rb:82:in `update_stylesheets'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/exec/sass_scss.rb:340:in `watch_or_update'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/exec/sass_scss.rb:51:in `process_result'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/exec/base.rb:52:in `parse'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/lib/sass/exec/base.rb:19:in `parse!'
D:/Ruby22-x64/lib/ruby/gems/2.2.0/gems/sass-3.5.1/bin/scss:13:in `<top (required)>'
D:/Ruby22-x64/bin/scss:23:in `load'
D:/Ruby22-x64/bin/scss:23:in `<main>'
*/
body:before {
  white-space: pre;
  font-family: monospace;
  content: "Error: Function r is missing argument $px.\A         on line 57 of identify.scss\A \A 52:       width: r(495);\A 53:       margin: 0 auto;\A 54: \A 55:       .item {\A 56:           width: r(132);\A 57:           height: r();\A 58:         div {\A 59:           width: r(90);\A 60:           height: r(90);\A 61:           overflow: hidden;\A 62:           img {"; }
